PBS Building Big

Kids Geography

Atmosphere Arcade

Oriental Pearl Tower Resources

http://www.travelchinaguide.com/attraction/shanghai/oriental_pearl.htm
http://en.wikipedia.org/wiki/Oriental_Pearl_Tower
http://skyscraperpage.com/cities/?buildingID=25

Eisenhower Tunnel

http://www.coloradodot.info/travel/eisenhower-tunnel
http://en.wikipedia.org/wiki/Eisenhower_Tunnel
http://www.history.com/this-day-in-history/construction-begins-on-americas-highest-vehicle-tunnel

Bridges

http://library.thinkquest.org/J002223/types/types.html
http://www.pbs.org/wgbh/buildingbig/bridge/basics.html
http://en.wikipedia.org/wiki/Bridge

Pyramids

http://www.ehow.com/list_6600287_different-types-pyramids.html
http://www.egyptism.com/pyramids-temples-and-other-monuments/pyramids/what-are-the-different-types-of-pyramid/
http://www.history.com/topics/pyramids-in-latin-america
http://www.ancientegypt.co.uk/pyramids/home.html
http://www.touropia.com/largest-pyramids-in-the-world/
http://www.nationalgeographic.com/pyramids/khafre.html
http://www.chiddingstone.kent.sch.uk/homework/egypt/pyramids.htm
http://egypt.mrdonn.org/pyramids.html
http://www.sciencekids.co.nz/sciencefacts/engineering/egyptianpyramids.html
http://en.wikipedia.org/wiki/Egyptian_pyramids

Pyramids of Giza

http://famouswonders.com/great-pyramids-of-giza/
http://www.ask-aladdin.com/pyramid.htm
http://en.wikipedia.org/wiki/Great_Pyramid_of_Giza
http://www.nationalgeographic.com/pyramids/khafre.html

Machu Picchu

http://www.rediscovermachupicchu.com/mp-construction.htm
http://www.pbs.org/wgbh/nova/ancient/wright-inca-engineering.html
http://library.thinkquest.org/CR0213201/architecture_of_machu_picchu.htm
http://en.wikipedia.org/wiki/Machu_Picchu

Oldest Structures

http://en.wikipedia.org/wiki/List_of_the_oldest_buildings_in_the_world
http://www.touropia.com/oldest-temples-in-the-world/
http://www.buzzfeed.com/fjelstud/oldest-buildings-in-the-world
http://en.wikipedia.org/wiki/List_of_the_oldest_schools_in_the_world
http://www.castles.org/architecture/architecture_3.htm
http://library.thinkquest.org/CR0215480/skyscraper1.htm

Eiffel Tower

http://www.eiffeltowerfacts.org/eiffel-tower-facts-for-kids/
http://www.sciencekids.co.nz/sciencefacts/engineering/eiffeltower.html
http://en.wikipedia.org/wiki/Eiffel_Tower
http://www.tour-eiffel.fr/en.html

Space Needle

http://www.spaceneedle.com/discover/funfacts.html
http://en.wikipedia.org/wiki/Space_Needle
http://www.ehow.com/facts_5140066_seattle-space-needle.html
http://www.informantive.com/travel/space-needle-facts-infographic/

Empire State Building

http://www.newyorktransportation.com/info/empirefact2.html
http://history1900s.about.com/od/1930s/a/empirefacts.htm
http://www.esbnyc.com/esb_story_historical_timeline.asp
http://en.wikipedia.org/wiki/Empire_State_Building

Sydney Opera House

http://australia.gov.au/about-australia/australian-story/sydney-opera-house
http://www.sydneyoperahouse.com/the_building_history_heritage.aspx
http://en.wikipedia.org/wiki/Sydney_Opera_House
http://www.sydneyoperahouse.biz/

Sphinx

http://www.ancientegypt.co.uk/pyramids/about/sphinx.html
http://www.sacred-destinations.com/egypt/giza-sphinx
http://amazeingart.com/seven-wonders/sphinx.html
http://en.wikipedia.org/wiki/Great_Sphinx_of_Giza

Taipei 101

http://skyscraperpage.com/cities/?buildingID=18
http://www.emporis.com/building/taipei101-taipei-taiwan
http://en.wikipedia.org/wiki/Taipei_101